20331103543 has 2 divisors, whose sum is σ = 20331103544. Its totient is φ = 20331103542.

The previous prime is 20331103489. The next prime is 20331103547. The reversal of 20331103543 is 34530113302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331103543 - 2²⁹ = 19794232631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331103547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165551771 + 10165551772.

It is an arithmetic number, because the mean of its divisors is an integer number (10165551772).

Almost surely, 2^20331103543 is an apocalyptic number.

20331103543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331103543 is an equidigital number, since it uses as much as digits as its factorization.

20331103543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 20331103543 its reverse (34530113302), we get a palindrome (54861216845).

The spelling of 20331103543 in words is "twenty billion, three hundred thirty-one million, one hundred three thousand, five hundred forty-three".